navcat
// sql 语句结尾的地方需要 设置为空
SELECT * FROM users ;
UPDATE users SET uname = 'hezhi' WHERE uid = 3
// 运行单行选中的sql 语句 跨界键
ctrl shift r
// 删除
DELETE FROM users WHERE uid = 1;
// 添加
INSERT INTO users(uid, uname, uaddress) VALUES(29, null , 'shanghai');